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Finding the Fourth Proportional to 262,676.55, 394,070.18 and 85,169.72

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Solution

The fourth proportional to 262,676.55, 394,070.18 and 85,169.72 is: 127,772.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,676.55 : 394,070.18 = 85,169.72 : x
  2. Step 2: Convert to fraction form
    262,676.55/394,070.18 = 85,169.72/x
  3. Step 3: Cross multiply
    262,676.55x = 394,070.18 × 85,169.72
  4. Step 4: Simplify right side
    262,676.55x = 33,562,844,494.75
  5. Step 5: Solve for x
    x = 33,562,844,494.75/262,676.55
  6. Step 6: Final answer
    x = 127,772.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.